Vacuum-cleaner



Patnted Aug. 31, 1920.

TORNEYS. '2

05, JW, A

cm'reo STATE an ALVA J. FISHER, 01d EVANSTOEN, ILLINOIS, .ASSIGNOR T0HURLEY MACHINE corrrnn'r,

OF CHICAGO, ILLINOIS, CORPORATION OF ILLINOIS.

vacuum-enema.

Application filed December 13, 1916. Serial No. 136,602.

To all whom it may 00mm Be it. known that l, ALVA J. Frsmn, a citizen ofthe United States, residing at Evanston, in the county of Cook and Stateof Illinois, have invented certain new and useful Improvements inVacuum-Cleaners,

. of which the following is a specification.

- My invention relates to a vacuum cleaner of that type'provided with asuction nozzle and suction fan, operated preferably by an electricmotor, through which fan the dust-laden air is drawn and forced into aseparating receptacle such as the usual dust ba My invention pertainsmore particular y to the construction of the casing for the fan and thecasing for the suction nozzle as well as to other features such as themeans for supporting the bearings for the forward rollers oi themachine, and also to means for mounting the longitudinal strip in thenozzle opening. The object of my invention is to provide a novel andefficient construction of vacuum cleaner particularly in the respectsabove noted.

, In the accompanying drawing Figure 1 is a sectional elevation of avacuum cleaner embodying my invention; Fig. 2 a vertical sectionalelevation on the line 2-2 oflhig'. 1; Fig. 3 an elevation of t e-lowerportion of the nozzle; Fig. 4 a detailed view of one end of the nozzlecasing; Fig. 5 a detail section on the line 5-5 of Fig. 2, and Fig. 6 isa fragmentary elevation of the outlet side of the fan casing.

The vacuum cleaner structure comprises essentially three separatecasings'A, l3, and C, all made of sheet metal formed and se curedtogether in the manner hereinafter shown.

The nozzle casing A is "formed of two separate sections, a from sectiona and a back section a, which are substantially similarly shaped, butreversed, and joined together at ceivea suction hose till a by welding,thereby constituting an integral structure. The front section ais provided with an opening a bordered by an integral flange a which isadapted to rewhendesired, but which is normally closed by the cap a. The

back section a is provided with a similar opening a which establishescommunication between this suction nozzle and the interior of the fancasing.

As shown in Figs. 4: andfi the ends of the sections wand a are so.restricted and suitable manner shaped as to together form at each end avertical cylindrical chamber a which is adapted to receive a Verticallymovable bolt D, whose stem passes through the top of such chamber and isprovided with an ad'- justing nut 01, another. nut d. being provided atthe extreme end of the stem to pro vent the removal of such bolt. Thelower end d of this stem is of plain cylindrical form and is slotted toreceive the extended ende of the transverse strip E, which is movablevertically in the nozzle opening and adapted to bear upon the surface tobe cleaned. This cylindrical end a? of the bolt is secured somewhatloosely to this strip in as by means 'of the rivet or pin e. v

The loweredge of the non section a is rolled outwardly and upwardly toform a horizontal tube a, thereby providing a bearing for the two rodsh, whose ends projecting beyond the ends of this tube are bent upwardlyand then horizontally to form the bearings f' ion the forward rollers Gof the machine. Theserods F are" held in the tube as the result of spotwelding at f. The lower edge of the back section-a is a", but merely toform a rounded surface for resentation to the article to be cleaned.

"T e casing which incloses the tan (not shown) comprises twosubstantially similar sections 6, h, whose meeting edges are weldedtogether at 72?, thereby making a practically integral structure. Thefrom section b has a' central opening similar to and communicating withthe opening a,

and the edges'of these openings are held to rolled over in similarmanner to form a tube gen end of such exhaust opening, which is whollyon the section b.

The nozzle casing A fitsflush against the front wall of the .fan casingB, the opening an oi course registering with the corres ending openingin the. tan casing. When t ese two casings are thus brought together therear wall of t porting wheel v ing thereof;

- welded together in juxtaposition they are held together as an'integral structure by welding, preferably,by spot-welding, as shown ata".. The motor case C is substantially cylindrical but provided at itsforward end with a circular marginal flange c, which is secured insuitable manner as by means of the screws 0' to e fan casing B. Thismotor casing 1s provided with brackets C in whose lower enJdsis mountedthe rear sup- According to this construction I am able to dispense withcastings usually of aluminum, and to employ with equal or bettersatisfaction thin plates of sheet steel, and yet be enabled to attainthe proper shapes and configurations required 'by. the nozzle and fancasing including the exhaust open- Althoughtwo of the casin s are madein sections they. are efliciently gral structure, besides which bywelding the nozzle casing and fan casing are secured together as if theyalso were practically integral. -Moreover the structure describedprovides a suitable bearing for the shaft or rod of the small wheels orrollers 'G.

to forma practically mte-' iaeaee a I claim:

1. A vacuum cleaner structure compnsing anozzle casing and a fan casingsecured together, the former casing having a bottom nozzle opening whosefront edge is rolled into a tube, a rod passing into such tube andsupporting a roller on the end of the rod. e

2. A vacuum cleaner structure comprising a nozzle casing and a fancasing secured bolts vertically movable therein, and a strip lon'tudinally arranged in the nozzle opening and secured to the lower endsof said b0 ts chambers,

, ALVA J. FISHER.

the ends of the nozzle casing be ing extended to form verticalcylindrical

